Oddly no.

The basis for the modern Lab is the St. John’s Water dog, a now-extinct dog from Canadian maritime provinces.
Examples were taken to the UK where the type was developed by breeding them with other gun dogs and renamed Labrador.

And there are English and American variations of the breed. English labs have a boxier head, American labs are slightly larger.

So yes…to be a proper WWII-era Lab, it would have to be an Engish sub-variant.

look , if you can’t say nigger , you can’t exclude the canadians either as it is racist !!